Site of phenylalanine ammonia--lyase activity and synthesis of lignin during xylem differentiation.
D002934:Cinnamates / Q000378:metabolism; D008031:Lignin / Q000096:biosynthesis*; D008190:Lyases / Q000378:metabolism*; D010649:Phenylalanine / Q000378:metabolism; D010945:Plants, Edible / Q000254:growth & development* / Q000378:metabolism; D014197:Trees / Q000254:growth & development*; D014316:Tritium
D002934:Cinnamates; D014316:Tritium; D010649:Phenylalanine; D008031:Lignin; D008190:Lyases